Simultaneous measurement bias correction and dynamic data reconciliation. Canadian Journal of Chemical Engineering | February 1, 2007| | COPYRIGHT 2007 Chemical Institute of Canada. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information) Copyright

INTRODUCTION

One of the main thrusts of modern plant operation is to improve the quality of on-line information in distributed control system (DCS). The information about the state of the process is usually corrupted by measurement errors consisting of random noise, measurement bias and outliers. Random noise is due to irreproducible factors that randomly affect the measurements. Measurement bias results when measured values are consistently either higher or lower than the true value of the process variable and is often attributed to improper installation and/or ...

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